Newfield Exploration Company was a petroleum, natural gas and natural gas liquids exploration and production company organized in Delaware and headquartered in Houston, Texas, USA. In February 2019, the company was acquired by Encana. On December 31, 2017, the company had of estimated proved reserves, of which over 99% was in the United States and 1% was in the South China Sea. The reserves were 37% petroleum, 19% natural gas liquids and 44% natural gas. The company's properties were as follows: Anadarko Basin - approximately 67% of proved reserves and production; 400,000 net acres in SCOOP and STACK plays; per day of production Arkoma Basin - 12% of proved reserves; 147,000 net acres; per day of production Uinta Basin - 13% of proved reserves; 217,000 net acres; per day of production Williston Basin - 10% of proved reserves; 82,000 net acres; per day of production South China Sea - 1% of proved reserves; per day of production History The company was founded in 1988 by the former chairman of Tenneco Oil Company, Joe B. Foster. Through investments by Charles Duncan, Jr., the University of Texas at Austin endowment funds and the founding employees, the company was capitalized with $9 million. In 1990, Newfield purchased its first production property, Eugene Island Block 172 in the Gulf of Mexico. Production of Eugene Island 172 increased from to over by the end of the year. In November 1993, Newfield became a public company via an initial public offering of 3.125 million shares of common stock. In 1999, the company acquired Gulf Australia Resources Limited, which had assets in the Timor Sea, offshore from northern Australia. In 2000, the company acquired assets in south Texas for $142 million. In 2001, it acquired Lariat Petroleum in a $333 million transaction, establishing a new focus area in the Anadarko Basin of Oklahoma. In 2002, it acquired EEX Corporation and its asset base in South Texas in a $640 million transaction. In 2004, Newfield began operations in the Rocky Mountains with the acquisition of Inland Resources. In 2005, Newfield explored the South China Sea in a partnership with CNOOC. In 2007, Newfield announced the $575 million acquisition of exploration and development areas in the Rocky Mountains from Stone Energy. In 2007, the company sold its assets in the North Sea for $486.4 million. In 2009, along with Hess Corporation, the company leased land in Pennsylvania in the